free@rss.ponder.catMB to Phys.org@rss.ponder.catEnglish · 3 days agoEarth may have had a ring system 466 million years agophys.orgexternal-linkmessage-square0fedilinkarrow-up17arrow-down10cross-posted to: science@hexbear.net
arrow-up17arrow-down1external-linkEarth may have had a ring system 466 million years agophys.orgfree@rss.ponder.catMB to Phys.org@rss.ponder.catEnglish · 3 days agomessage-square0fedilinkcross-posted to: science@hexbear.net